An open letter to President Obama was posted on an Iranian website (khodnevis.org) today from Dr. Mahmoud Moradkhani — the nephew of Iranian Supreme Leader Ayatollah Ali Khamenei. Â This letter is explosive and tells Obama, in essence, that the ayatollah, his uncle, is lying in negotiations, practicing the Shia doctrine of taqiyya in which it is permissible for Muslims to lie to the infidel for the advancement of Islam.